package com.wn.utils;

import com.wn.entity.Emp;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.UUID;

public class DownloadImage {

    /**
//     * @param args
     * @throws Exception
     */
    public static String abc(String f) throws Exception {
        String filename = "";
        filename = UUID.randomUUID().toString().substring(3,7)+".jpg";
        Emp emp = new Emp();
        // TODO Auto-generated method stub
//		download("http://ui.51bi.com/opt/siteimg/images/fanbei0923/Mid_07.jpg",
//				"51bi.jpg", "D:\\image\\");
        download(f,
                filename, "D:\\image\\");
        return filename;
    }

    public static void download(String urlString, String filename,
                                String savePath) throws Exception {
        // 构造URL
        URL url = new URL(urlString);
        // 打开连接
        URLConnection con = url.openConnection();
        //设置请求超时为5s
        con.setConnectTimeout(5 * 1000);
        // 输入流
        InputStream is = con.getInputStream();

        // 1K的数据缓冲
        byte[] bs = new byte[1024];
        // 读取到的数据长度
        int len;
        // 输出的文件流
        File sf = new File(savePath);
        if (!sf.exists()) {
            sf.mkdirs();
        }
        OutputStream os = new FileOutputStream(sf.getPath() + "\\" + filename);
        // 开始读取
        while ((len = is.read(bs)) != -1) {
            os.write(bs, 0, len);
        }
        // 完毕，关闭所有链接
        os.close();
        is.close();
    }

}
